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An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.295 T. If the kinetic energy of the electron is 4.00 x 10-19 J, find the speed of the electron and the radius of the circular path. (a) the speed of the electron i figured out is 937131 m/s but i cant figure out the second part.. (b) the radius of the circular path µm
An air molecule is moving at a speed of 438m/s. How many meters would molecule move during 7ms (milliseconds) if it didn't collide with any other molecules.
A heavier mass m1 and a lighter mass m2 are 20.0 cm apart and experience a gravitational force of attraction that is 9.00 10-9 N in magnitude. Determine the value of each individual mass
You charge an initially uncharged 62.7-mF capacitor through a 46.9-? resistor by means of a 9.00-V battery having negligible internal resistance. Find the time constant of the circuit. What is the charge of the capacitor 1.45 time constants after the..
large transformers when used for some time become very hot and are cooled by circulating oil. the heating of the
A spaceship moves past you at speed v. You calculate the ship to be 364 m long, whereas an astronaut on the ship measures a length of 420 m. Find v.
A race driver has made a pit stop to refuel. After refueling,he leaves the pit area with an acceleration whose magnitude is6.3 m/s2; how much time is required for it to catch the other car
a water tank in the shape of a circular cone has a base radius of 8 ft. and a height of 9 ft. and is supported is such
A pendulum is made out of a (251.3 +/- 0.1) g mass and a string that is (1.3 +/- 0.005) m long. compute the centripetal force acting on the mass
At what distance along the central axis of a ring of radius R = 0.100 m and uniform charge is the magnitude of the electric field due to the ring's charge maximum
A home-run baseball is hit with an initial speed vo=37.0 m/s at an initial angle qo=53.1o. Find the time when the ball reaches the highest point of its flight, and find its height at this point
During a stage production of Peter Pan, the 53.5 kg actress playing Peter has to fly in vertically (descend). Calculate the tension in the wire supporting the actor
A pilot claims to have seen a UFO moving initially at a speed of about 374 m/s in an easterly direction and then, Compute the UFO's average acceleration during the turn
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